Injury of unsp nerve at lower leg level, right leg, sequela

This code signifies a long-term or late effect of an injury to an unspecified nerve in the right lower leg. This could manifest as persistent pain, numbness, weakness, or other neurological deficits that are a direct consequence of a past trauma to the nerve. The original acute injury has resolved, but its neurological impact remains.

Apply this code when documenting a patient presenting with residual symptoms from a prior, unspecified nerve injury in the right lower leg, and the original injury is no longer acute. This is appropriate for conditions like chronic neuropathic pain, persistent paresthesia, or muscle weakness in the right lower leg, directly attributable to an old nerve injury where the specific nerve involved was not identified.

• Always use this code as a secondary diagnosis, following the code for the specific sequela (e.g., chronic pain, muscle weakness).
• Ensure documentation clearly links the current neurological deficit to a past injury of an unspecified nerve in the right lower leg.
• Avoid using this code if the specific nerve (e.g., tibial, peroneal) is identified; instead, use a more specific S84.x code with the "S" seventh character.